A At At At A mAt

The Routh-Hurwitz conditions for stability are:

a1 a0

a3 a2

a1 a0 0

a3 0

a2 a4 a1 a3

For the structural system of dam and reservoir;m,c, k, g, c' andk' are positive quantities. Therefore, ao, a1, a2 ,a3and a4 are always positive. The values of the two determinants in equation 4.21 are given as:

32 At5

0 0

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